Jon Radel wrote:

Duplex mismatch between OpenBSD router NICs and switch ports plugged into? Can make a horrible mess of packet loss rates and throughput. Also see what OpenBSD has to say about NIC error rates.

--Jon Radel

Steve Glaus wrote:
Looking at my dmesg's I noticed the following lines:

   dc0: failed to force tx and rx to idle state
   dc2: failed to force tx and rx to idle state

Could this have anything to do with it? I'm not really worried about the outside interfaces though...

looking at ifconfig I see:

   ----internal LAN interface---
   sis0: flags=8943<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
   media: Ethernet autoselect(100baseTX full-duplex)

  ----external ISP1 interface----
   dc2: flags=8902<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST
   media: Ethernet autoselect (100baseTX full-duplex)

For all my adaptors.

The switch should be full duplex too, no? (3com baseline 2024)

Another (interesting?) thing is that when I manually configure the mediaoptions

      (ifconfig sis0 media 100baseTX mediaopt full-duplex <IP><NETMASK>)

The iperf test shows ~ 200Kbit/s !!

I'm starting to have the feeling that this is just a bad adapter......


Thanks!

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